ASP.NET實現的簡單易用文件上傳類

2024-07-10 13:29:05

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這篇文章主要介紹了ASP.NET實現的簡單易用文件上傳類,本文給出實現代碼和使用方法示例,需要的朋友可以參考下

調用方法：

UploadFile uf = new UploadFile();

/*可選參數*/

uf.SetIsUseOldFileName(true);//是否使用原始文件名作為新文件的文件名(默認:true),true原始文件名,false系統生成新文件名

uf.SetFileDirectory(Server.MapPath("/file/temp3/"));//文件保存路徑(默認:/upload)

uf.SetFileType("*");//允許上傳的文件類型, 逗號分割,必須全部小寫! *表示所有 (默認值: .pdf,.xls,.xlsx,.doc,.docx,.txt,.png,.jpg,.gif )

uf.SetIsRenameSameFile(false);//重命名同名文件？

//文件以時間分目錄保存

var message = uf.Save(Request.Files["Fileupload1"]); // “/file/temp3/2015/4/xx.jpg”

//文件以編號分目錄保存

var message2 = uf.Save(Request.Files["Fileupload1"], "001" /*編號*/); // “/file/temp3/001/xx.jpg”

//返回信息

var isError = message.Error;//判段是否上傳成功

var webPath = message.WebFilePath;//返回web路徑

var msg = message.Message;//返回上傳信息

var filePath = message.FilePath;//反回文件路徑

var isSuccess = message.Error == false;

代碼：

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Security.Cryptography;

using System.Text.RegularExpressions;

using System.Web;

using System.Web.Hosting;

namespace SyntacticSugar

{

/// <summary>

/// ** 描述：單文件上傳類 (暫時不支持多文件上傳)

/// ** 創始時間：2015-5-27

/// ** 修改時間：-

/// ** 作者：sunkaixuan

/// </summary>

public class UploadFile

{

private ParamsModel Params;

public UploadFile()

{

Params = new ParamsModel()

{

FileDirectory = "/upload",

FileType = ".pdf,.xls,.xlsx,.doc,.docx,.txt,.png,.jpg,.gif",

MaxSizeM = 10,

PathSaveType = PathSaveType.dateTimeNow,

IsRenameSameFile=true

};

}

/// <summary>

/// 文件保存路徑(默認:/upload)

/// </summary>

public void SetFileDirectory(string fileDirectory)

{

if (fileDirectory == null)

{

throw new ArgumentNullException("fileDirectory");

}

var isMapPath = Regex.IsMatch(fileDirectory, @"[a-z]/://", RegexOptions.IgnoreCase);

if (isMapPath)

{

fileDirectory = GetRelativePath(fileDirectory);

}

Params.FileDirectory = fileDirectory;

}

/// <summary>

/// 是否使用原始文件名作為新文件的文件名(默認:true)

/// </summary>

/// <param name="isUseOldFileName">true原始文件名,false系統生成新文件名</param>

public void SetIsUseOldFileName(bool isUseOldFileName)

{

Params.IsUseOldFileName = isUseOldFileName;

}

/// <summary>

/// 允許上傳的文件類型, 逗號分割,必須全部小寫! *表示所有 (默認值: .pdf,.xls,.xlsx,.doc,.docx,.txt,.png,.jpg,.gif )

/// </summary>

public void SetFileType(string fileType)

{

Params.FileType = fileType;

}

/// <summary>

/// 允許上傳多少大小(單位：M)

/// </summary>

public void SetMaxSizeM(double maxSizeM)

{

Params.MaxSizeM = maxSizeM;

}

/// <summary>

/// 重命名同名文件？

/// </summary>

/// <param name="isRenameSameFile">true:重命名,false覆蓋</param>

public void SetIsRenameSameFile(bool isRenameSameFile)

{

Params.IsRenameSameFile = isRenameSameFile;

}

/// <summary>

/// 保存表單文件

/// </summary>

/// <param name="postFile">HttpPostedFile</param>

/// <returns></returns>

public ResponseMessage Save(HttpPostedFile postFile)

{

return CommonSave(postFile);

}

/// <summary>

/// 保存表單文件,根據編號創建子文件夾

/// </summary>

/// <param name="postFile">HttpPostedFile</param>

/// <param name="number">編號</param>

/// <returns></returns>

public ResponseMessage Save(HttpPostedFile postFile, string number)

{

Params.PathSaveType = PathSaveType.code;

_Number = number;

return CommonSave(postFile);

}

/// <summary>

/// 保存表單文件,根據HttpPostedFile

/// </summary>

/// <param name="postFile">HttpPostedFile</param>

/// <param name="isRenameSameFile">值為true 同名文件進行重命名，false覆蓋原有文件</param>

/// <param name="fileName">新的文件名</param>

/// <returns></returns>

private ResponseMessage CommonSave(HttpPostedFile postFile)

{

ResponseMessage reval = new ResponseMessage();

try

{

if (postFile == null || postFile.ContentLength == 0)

{

TryError(reval, "沒有文件！");

return reval;

}

//文件名

string fileName = Params.IsUseOldFileName ? postFile.FileName : DateTime.Now.ToString("yyyyMMddhhmmssms") + Path.GetExtension(postFile.FileName);

//驗證格式

this.CheckingType(reval, postFile.FileName);

//驗證大小

this.CheckSize(reval, postFile);

if (reval.Error) return reval;

string webDir = string.Empty;

// 獲取存儲目錄

var directory = this.GetDirectory(ref webDir);

var filePath = directory + fileName;

if (System.IO.File.Exists(filePath))

{

if (Params.IsRenameSameFile)

{

filePath = directory + DateTime.Now.ToString("yyyyMMddhhssms") + "-" + fileName;

}

else

{

System.IO.File.Delete(filePath);

}

}

// 保存文件

postFile.SaveAs(filePath);

reval.FilePath = filePath;

reval.FilePath = webDir + fileName;

reval.FileName = fileName;

reval.WebFilePath = webDir + fileName;

return reval;

}

catch (Exception ex)

{

TryError(reval, ex.Message);

return reval;

}

}

private void CheckSize(ResponseMessage message, HttpPostedFile PostFile)

{

if (PostFile.ContentLength / 1024.0 / 1024.0 > Params.MaxSizeM)

{

TryError(message, string.Format("對不起上傳文件過大，不能超過{0}M！", Params.MaxSizeM));

}

}

/// <summary>

/// 根據物理路徑獲取相對路徑

/// </summary>

/// <param name="fileDirectory"></param>

/// <param name="sever"></param>

/// <returns></returns>

private static string GetRelativePath(string fileDirectory)

{

var sever = HttpContext.Current.Server;

fileDirectory = "/" + fileDirectory.Replace(sever.MapPath("~/"), "").TrimStart('/').Replace('//', '/');

return fileDirectory;

}

/// <summary>

/// 獲取目錄

/// </summary>

/// <returns></returns>

private string GetDirectory(ref string webDir)

{

var sever = HttpContext.Current.Server;

// 存儲目錄

string directory = Params.FileDirectory;

// 目錄格式

string childDirectory = DateTime.Now.ToString("yyyy-MM/dd");

if (Params.PathSaveType == PathSaveType.code)

{

childDirectory = _Number;

}

webDir = directory.TrimEnd('/') + "/" + childDirectory + '/';

string dir = sever.MapPath(webDir);

// 創建目錄

if (Directory.Exists(dir) == false)

Directory.CreateDirectory(dir);

return dir;

}

/// <summary>

/// 驗證文件類型)

/// </summary>

/// <param name="fileName"></param>

private void CheckingType(ResponseMessage message, string fileName)

{

if (Params.FileType != "*")

{

// 獲取允許允許上傳類型列表

string[] typeList = Params.FileType.Split(',');

// 獲取上傳文件類型(小寫)

string type = Path.GetExtension(fileName).ToLowerInvariant(); ;

// 驗證類型

if (typeList.Contains(type) == false)

this.TryError(message, "文件類型非法!");

}

}

/// <summary>

/// 拋出錯誤

/// </summary>

/// <param name="Msg"></param>

private void TryError(ResponseMessage message, string msg)

{

message.Error = true;

message.Message = msg;

}

#region models

private class ParamsModel

{

/// <summary>

/// 文件保存路徑

/// </summary>

public string FileDirectory { get; set; }

/// <summary>

/// 允許上傳的文件類型, 逗號分割,必須全部小寫!

/// </summary>

public string FileType { get; set; }

/// <summary>

/// 允許上傳多少大小

/// </summary>

public double MaxSizeM { get; set; }

/// <summary>

/// 路徑存儲類型

/// </summary>

public PathSaveType PathSaveType { get; set; }

/// <summary>

/// 重命名同名文件?

/// </summary>

public bool IsRenameSameFile { get; set; }

/// <summary>

/// 是否使用原始文件名

/// </summary>

public bool IsUseOldFileName { get; set; }

}

/// <summary>

/// 路徑存儲類型

/// </summary>

public enum PathSaveType

{

/// <summary>

/// 根據時間創建存儲目錄

/// </summary>

dateTimeNow = 0,

/// <summary>

/// 根據ID編號方式來創建存儲目錄

/// </summary>

code = 1

}

private string _Number { get; set; }

/// <summary>

/// 反回信息

/// </summary>

public class ResponseMessage

{

/// <summary>

/// 上傳錯誤

/// </summary>

public bool Error { get; set; }

/// <summary>

/// 消息

/// </summary>

public string Message { get; set; }

/// <summary>

/// 文件路徑

/// </summary>

public string FilePath { get; set; }

/// <summary>

/// 網站路徑

/// </summary>

public string WebFilePath { get; set; }

/// <summary>

/// 獲取文件名

/// </summary>

public string FileName { get; set; }

}

#endregion

}

}